Home / 9,989.21-13,786.79-9,546.35

Finding the Fourth Proportional to 9,989.21, 13,786.79 and 9,546.35

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Solution

The fourth proportional to 9,989.21, 13,786.79 and 9,546.35 is: 13,175.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.21 : 13,786.79 = 9,546.35 : x
  2. Step 2: Convert to fraction form
    9,989.21/13,786.79 = 9,546.35/x
  3. Step 3: Cross multiply
    9,989.21x = 13,786.79 × 9,546.35
  4. Step 4: Simplify right side
    9,989.21x = 131,613,406.05
  5. Step 5: Solve for x
    x = 131,613,406.05/9,989.21
  6. Step 6: Final answer
    x = 13,175.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.